CN208454723U - The online desalination of dangerous waste incineration flue gas washes and reclaiming system - Google Patents

The online desalination of dangerous waste incineration flue gas washes and reclaiming system Download PDF

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Publication number
CN208454723U
CN208454723U CN201820720724.7U CN201820720724U CN208454723U CN 208454723 U CN208454723 U CN 208454723U CN 201820720724 U CN201820720724 U CN 201820720724U CN 208454723 U CN208454723 U CN 208454723U
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water
flue gas
dangerous waste
reverse osmosis
circulation
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向希蜀
孙超
王辉果
华晶晶
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Shanghai Yi Mao Environmental Technology Co Ltd
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Shanghai Yi Mao Environmental Technology Co Ltd
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A20/00Water conservation; Efficient water supply; Efficient water use
    • Y02A20/124Water desalination
    • Y02A20/131Reverse-osmosis

Abstract

The utility model discloses a kind of online desalination of dangerous waste incineration flue gas washes and reclaiming system, and the system comprises circulation type washing sink, active carbon filtering tank, coagulative precipitation tank, immersion ultrafiltration apparatus, butterfly reverse osmosis membrane group, double-effect evaporation crystallizer, drier and pipe heat exchangers;The circulation type washing sink, active carbon filtering tank, coagulative precipitation tank, immersion ultrafiltration apparatus, butterfly reverse osmosis membrane group, double-effect evaporation crystallizer, drier are sequentially connected.The utility model proposes the online desalination of dangerous waste incineration flue gas washes and reclaiming system, the concentration of salt in recirculated water can be reduced;It solves domestic dangerous waste disposition center flue gas recirculation washing pipeline system salt Crystallization Plugging pipeline, the crystallization of scrubbing tower salt at present and increases the operation problem such as flue gas resistance.

Description

The online desalination of dangerous waste incineration flue gas washes and reclaiming system
Technical field
The utility model belongs to environmental technology field, is related to the dangerous waste incineration work that a kind of hazardous waste is administered in industry Skill more particularly to a kind of online desalination of dangerous waste incineration flue gas washes and reclaiming system.
Background technique
At home and abroad, at present in the dangerous waste incineration technique of mainstream, the improvement of incineration flue gas generally all includes wet process Wash acid removal process.After the technique is in sack cleaner in incineration flue gas Processing tecchnics process, before smoke re-heater.It is wet The main function of method washing process is the sour gas contained in further removal incineration flue gas, salt particle, dust etc..According to cigarette The monitoring content of sour gas in gas determines that washing water is the alkalescent water of neutral water (between pH=7-8) or pH >=8.
When carrying out deacidification and particulate matter using wet scrubbing technique, circulating water pool, washing water are set below scrubbing tower After exchanging heat with high-temperature flue gas and remove acid gas in flue gas and particulate matter, flue-gas temperature is reduced, and is entered after demisting next Process is administered in road;Meanwhile temperature of washing water increases, by entering circulating water pool after heat exchanger cooling, the water in circulating water pool is logical It crosses circulating pump and sprays into again and wash flue gas in scrubbing tower, be recycled with this.
As the number that washing water recycles washing flue gas increases, salts substances (generally sodium chloride, the chlorine in circulating water pool Change calcium, calcium sulfate etc.) content gradually increases, and these salts substances will crystallize precipitation after reaching saturation.Continue in the case Scrubbing tower is sprayed by circulating pump using high salt wash water and washs flue gas, will cause the positions such as pipeline, spray head, tower body inner wall salt Substance crystallization is precipitated, and blocks pipeline, spray head, reduces tower inner volume to increase flue gas resistance etc..Some Domestic technique is also by this Class high-salt wastewater sprays into the chilling tower of preceding working procedure, and this mode will cause the corrosion of chilling tower burn into flue, flue Situations such as blocking, many hazardous Waste Incineration centers domestic at present have had already appeared such failure.
In view of this, nowadays there is an urgent need to design a kind of new dangerous waste incineration processing mode, to overcome existing place Drawbacks described above existing for reason mode.
Utility model content
The technical problem to be solved by the utility model is to provide a kind of online desalination of dangerous waste incineration flue gas washes and Reclaiming system can solve domestic dangerous waste disposition center flue gas recirculation washing pipeline system salt Crystallization Plugging pipeline, scrubbing tower at present Salt crystallization increases the operation problem such as flue gas resistance.
In order to solve the above technical problems, the utility model adopts the following technical solution:
A kind of online desalination of dangerous waste incineration flue gas washes and reclaiming system, which is characterized in that the system comprises: it follows Ring type washing sink, active carbon filtering tank, coagulative precipitation tank, immersion ultrafiltration apparatus, butterfly reverse osmosis membrane group, double-effect evaporation crystallization Device, drier and pipe heat exchanger;
The circulation type washing sink, active carbon filtering tank, coagulative precipitation tank, immersion ultrafiltration apparatus, butterfly reverse osmosis membrane Group, double-effect evaporation crystallizer, drier are sequentially connected;
The double-effect evaporation crystallizer, drier pass through piping connection to pipe heat exchanger respectively, double-effect evaporation crystallizer, Steam is delivered to pipe heat exchanger by drier, and pipe heat exchanger, to type washing sink is recycled, steam is condensed by piping connection Water is delivered to circulation type washing sink;
The circulation type washing sink is set to below dangerous waste incineration flue gas wet scrubbing tower, and the water in pond is mainly used to Circulation washing dangerous waste incineration flue gas, removes the sour gas and particulate matter in flue gas;It is provided in circulation type washing sink Line pH analyzer and liquidometer, and have pH regulating system and tank level control system;
The pH regulating system main function is that the water adjusted in circulating water pool is 7.5-8, the tank level control system master It acts on and is automatically replenished recirculated water when being water level decreasing to the early warning water level low spot in pond, water level rises to early warning water in pond Stop supplement recirculated water when the high point of position;
By the first piping connection, the first pipeline is equipped with water pump, circulation for the circulation type washing sink and active carbon filtering tank Recirculated water in type washing sink is evacuated to the filtering of active carbon filtering tank by water pump, preliminary to remove the biggish impurity of partial size;
The active carbon filtering tank and coagulative precipitation tank pass through the second piping connection, and the water after primary filtration is sent to coagulation Sedimentation basin forms flocculation sedimentation by addition sodium hydroxide solution, PAC and PAM, reduces the calcium and magnesium ion in water, coagulating sedimentation Sludge is discharged after bottom of pond concentration, as the outer disposition of dangerous waste committee;
The coagulative precipitation tank passes through third piping connection immersion ultrafiltration apparatus, passes through coagulating sedimentation in coagulative precipitation tank Primary water afterwards enters immersion ultrafiltration apparatus by overflow, and colloidal substance, granule foreign are removed in this process, and a small amount of ultrafiltration produces Raw concentrated water is sent into double-effect evaporation crystallizer and is disposed;
The immersion ultrafiltration apparatus is equipped with water pump, is contained by the 4th piping connection butterfly reverse osmosis membrane group, the 4th pipeline There is the ultrafiltration of water, ion and small molecular weight material to produce water and progress salts substances in butterfly reverse osmosis membrane group are evacuated to by water pump It removes, between 70%-80%, the production water of butterfly reverse osmosis membrane group returns in circulation type washing sink producing water ratio;
The butterfly reverse osmosis membrane group is equipped with water pump by the 5th piping connection double-effect evaporation crystallizer, the 5th pipeline;Butterfly The concentrated water of formula reverse osmosis membrane group is evacuated in double-effect evaporation crystallizer by water pump, and the steam that evaporative crystallization generates passes through pipe type heat transfer It is returned to after device condensation in circulation type washing sink;
The double-effect evaporation crystallizer passes through the 6th piping connection drier;The dope that double-effect evaporation crystallizer generates is still It containing a small amount of moisture, send into drier and is finally dried to obtain salt slag, salt slag is as the outer processing of dangerous waste committee;It is generated in evaporation process Steam by pipe heat exchanger condense after return to circulation type washing sink in;
The waste water of the high saliferous generated in incineration flue gas circulation washing process is persistently discharged by wet scrubbing tower bottom, and is led to Enter in circulating water pool after crossing heat exchanger heat exchange.
A kind of online desalination of dangerous waste incineration flue gas washes and reclaiming system, the system comprises: circulation washing water storage Container, filtering tank, coagulative precipitation tank, ultrafiltration apparatus, reverse osmosis membrane group, crystallizing evaporator, drier and heat exchanger;
The circulation washs water storage container, filtering tank, coagulative precipitation tank, ultrafiltration apparatus, reverse osmosis membrane group, evaporative crystallization Device, drier are sequentially connected;
The crystallizing evaporator, drier pass through piping connection to heat exchanger respectively, and crystallizing evaporator, drier are by steam It is delivered to heat exchanger, steam condensate (SC) is delivered to circulation washing by piping connection to circulation washing water storage container by heat exchanger Water storage container.
As a kind of preferred embodiment of the utility model, the circulation washing water storage container is set to dangerous waste incineration cigarette Below air humidity method scrubbing tower, the water in pond is mainly used to circulation washing dangerous waste incineration flue gas, removes the sour gas in flue gas Body and particulate matter;It is provided with online pH analyzer and liquidometer in circulation washing water storage container, and has pH regulating system and liquid Level controlling system;
The pH regulating system main function is that the water adjusted in circulating water pool is 7.5-8, the tank level control system master It acts on and is automatically replenished recirculated water when being water level decreasing to the early warning water level low spot in pond, water level rises to early warning water in pond Stop supplement recirculated water when the high point of position.
As a kind of preferred embodiment of the utility model, the circulation washing water storage container and filtering tank pass through the first pipeline Connection, the first pipeline are equipped with water pump, and the recirculated water recycled in type washing sink is evacuated to filtering tank filtering, tentatively removal grain by water pump The biggish impurity of diameter;
The filtering tank and coagulative precipitation tank pass through the second piping connection, and the water after primary filtration is sent to coagulating sedimentation Pond forms flocculation sedimentation by addition sodium hydroxide solution, PAC and PAM, reduces the calcium and magnesium ion in water, coagulated sludge It is discharged after bottom of pond concentration, as the outer disposition of dangerous waste committee.
As a kind of preferred embodiment of the utility model, the coagulative precipitation tank passes through third piping connection ultrafiltration apparatus, Ultrafiltration apparatus is entered by overflow by the primary water after coagulating sedimentation in coagulative precipitation tank, colloidal substance, granule foreign are at this Process removal, the concentrated water that a small amount of ultrafiltration generates is sent to be disposed into crystallizing evaporator.
As a kind of preferred embodiment of the utility model, the ultrafiltration apparatus passes through the 4th piping connection reverse osmosis membrane group, 4th pipeline is equipped with water pump, and the ultrafiltration containing water, ion and small molecular weight material produces water and is evacuated in reverse osmosis membrane group by water pump Salts substances removal is carried out, for producing water ratio between 70%-80%, the production water of reverse osmosis membrane group returns to circulation washing water storage container In.
As a kind of preferred embodiment of the utility model, the reverse osmosis membrane group passes through the 5th piping connection evaporative crystallization Device, the 5th pipeline are equipped with water pump;The concentrated water of reverse osmosis membrane group is evacuated in crystallizing evaporator by water pump, the steaming that evaporative crystallization generates Vapour is returned to after being condensed by heat exchanger in circulation washing water storage container.
As a kind of preferred embodiment of the utility model, the crystallizing evaporator passes through the 6th piping connection drier;It steams The dope that hair crystallizer generates still contains a small amount of moisture, send into drier and is finally dried to obtain salt slag, salt slag is as dangerous waste The outer processing of committee;The steam generated in evaporation process is returned to after being condensed by heat exchanger in circulation washing water storage container.
As a kind of preferred embodiment of the utility model, the waste water of the high saliferous generated in incineration flue gas circulation washing process It is persistently discharged by wet scrubbing tower bottom, and entered in circulating water pool after being exchanged heat by heat exchanger.
A kind of online desalination and reuse method of the above-mentioned online desalination of dangerous waste incineration flue gas washes and reclaiming system, Described method includes following steps:
Step S1: the recirculated water in circulation washing container is evacuated to filtering tank filtering by water pump;
Step S2: the water after primary filtration enters coagulative precipitation tank, adjusts pH to 7.5-8 by adding sodium hydroxide solution Between, it then adds PAC and PAM and stirs, generate floccule body precipitating;
Step S3: ultrafiltration apparatus is entered by overflow by the primary water after coagulating sedimentation;
Step S4: ultrafiltration production water is evacuated in reverse osmosis membrane group by water pump to carry out except salt treatment, and producing water ratio is in 70%-80% Between, the production water of reverse osmosis membrane group returns in circulation type washing sink;The concentrated water that ultrafiltration generates is evacuated to evaporative crystallization dress by water pump Set middle disposition;
Step S5: the concentrated water that reverse osmosis membrane group generates is evacuated in crystallizing evaporator by water pump;
Step S6: the steam that evaporative crystallization generates is returned to after being condensed by pipe heat exchanger in circulation type washing sink;
Step S7: the dope that crystallizing evaporator generates still contains a small amount of moisture, send and is dried and evaporated process into drier The steam of middle generation is returned to after being condensed by pipe heat exchanger in circulation type washing sink.
The utility model has the beneficial effects that: the utility model proposes the online desalination of dangerous waste incineration flue gas washes And reclaiming system and method, so that the high slat-containing wastewater from incineration flue gas wet recycle scrubbing tower passes through series of preprocessing Afterwards, it being concentrated and separated using butterfly reverse osmosis membrane, generated desalted water (referred to as producing water) returns in circulating water pool, meanwhile, After the concentrated water that butterfly reverse osmosis membrane generates passes through double-effect evaporation crystallization apparatus, after the steam of generation is condensed by pipe heat exchanger It returns in circulating water pool, is mixed with the fume washing water of high saliferous, reduce the concentration of salt in recirculated water.Solve domestic dangerous waste at present Disposition center flue gas recirculation washing pipeline system salt Crystallization Plugging pipeline, the crystallization of scrubbing tower salt increase the operation hardly possible such as flue gas resistance Topic.
In the utility model, incineration flue gas is recycled in washing process, and the waste water of high saliferous is continued by wet scrubbing tower bottom Discharge, and enter in circulating water pool after being exchanged heat by heat exchanger.Meanwhile online desalting system described in the utility model is normally transported Row, high saliferous recirculated water return to circulating water pool by the production water described in the utility model after line desalination process system desalting processing In, recirculated water is diluted, salinity in water is reduced.Salt content in flue gas recirculation washing water described in the utility model is practical new with this Process system described in type is of substantially equal for the removal amount of salt, and the levels of chloride ion are maintained at 7000- in recirculated water 8000mg/L。
Detailed description of the invention
Fig. 1 is the composition schematic diagram of the online desalination of the utility model dangerous waste incineration flue gas washes and reclaiming system.
Specific embodiment
The preferred embodiment that according to the present invention will be described in detail below with reference to the accompanying drawings.
Embodiment one
Referring to Fig. 1, the utility model discloses a kind of online desalination of dangerous waste incineration flue gas washes and reclaiming system, The system comprises: circulation type washing sink 001, active carbon filtering tank 002, coagulative precipitation tank 003, immersion ultrafiltration apparatus 004, Butterfly reverse osmosis membrane group 005, double-effect evaporation crystallizer 006, drier 007 and pipe heat exchanger 008.
The circulation type washing sink 001, active carbon filtering tank 002, coagulative precipitation tank 003, immersion ultrafiltration apparatus 004, Butterfly reverse osmosis membrane group 005, double-effect evaporation crystallizer 006, drier 007 are sequentially connected.
Respectively by piping connection to pipe heat exchanger 008, economic benefits and social benefits are steamed for the double-effect evaporation crystallizer 006, drier 007 Steam is delivered to pipe heat exchanger 008 by hair crystallizer 006, drier 007, and pipe heat exchanger 008 is by piping connection to following Steam condensate (SC) is delivered to circulation type washing sink 001 by ring type washing sink 001.
The circulation type washing sink 001 is set to below dangerous waste incineration flue gas wet scrubbing tower, and the water in pond is main For recycling washing dangerous waste incineration flue gas, the sour gas and particulate matter in flue gas are removed;It is set in circulation type washing sink 001 It is equipped with online pH analyzer and liquidometer, and has pH regulating system and tank level control system.
The pH regulating system main function is that the water adjusted in circulating water pool is 7.5-8, the tank level control system master It acts on and is automatically replenished recirculated water when being water level decreasing to the early warning water level low spot in pond, water level rises to early warning water in pond Stop supplement recirculated water when the high point of position.
For the circulation type washing sink 001 with active carbon filtering tank 002 by the first piping connection, the first pipeline is equipped with water Pump, the recirculated water recycled in type washing sink are evacuated to the filtering of active carbon filtering tank 002 by water pump, and preliminary removal partial size is biggish miscellaneous Matter.
The active carbon filtering tank 002 passes through the second piping connection with coagulative precipitation tank 003, and the water after primary filtration is sent To coagulative precipitation tank 003, flocculation sedimentation is formed by addition sodium hydroxide solution, PAC and PAM, reduce calcium in water, magnesium from Son, coagulated sludge are discharged after bottom of pond concentration, as the outer disposition of dangerous waste committee.
The coagulative precipitation tank 003 passes through third piping connection immersion ultrafiltration apparatus 004, leads in coagulative precipitation tank 003 Primary water after crossing coagulating sedimentation enters immersion ultrafiltration apparatus 004 by overflow, and colloidal substance, granule foreign are gone in this process It removes, the concentrated water that a small amount of ultrafiltration generates, which is sent into double-effect evaporation crystallizer 006, to be disposed.
The immersion ultrafiltration apparatus 004 is equipped with water by the 4th piping connection butterfly reverse osmosis membrane group 005, the 4th pipeline Pump, the ultrafiltration production water containing water, ion and small molecular weight material is evacuated in butterfly reverse osmosis membrane group 005 by water pump carries out salt Substance removal, between 70%-80%, the production water of butterfly reverse osmosis membrane group 005 returns in circulation type washing sink 001 producing water ratio.
The butterfly reverse osmosis membrane group 005 is equipped with water by the 5th piping connection double-effect evaporation crystallizer 006, the 5th pipeline Pump;The concentrated water of butterfly reverse osmosis membrane group 005 is evacuated in double-effect evaporation crystallizer 006 by water pump, the steam that evaporative crystallization generates It is returned to after being condensed by pipe heat exchanger 008 in circulation type washing sink 001.
The double-effect evaporation crystallizer 006 passes through the 6th piping connection drier 007;Double-effect evaporation crystallizer 006 generates Dope still contain a small amount of moisture, send and be finally dried to obtain salt slag into drier 007, salt slag is entrusted outer processing as dangerous waste; The steam generated in evaporation process is returned to after being condensed by pipe heat exchanger 008 in circulation type washing sink 001.
The waste water of the high saliferous generated in incineration flue gas circulation washing process is persistently discharged by wet scrubbing tower bottom, and is led to Enter in circulating water pool after crossing heat exchanger heat exchange.
A kind of online desalination and reuse method of the above-mentioned online desalination of dangerous waste incineration flue gas washes and reclaiming system, It is characterized in that, described method includes following steps:
Step S1: the recirculated water in circulation type washing sink 001 is evacuated to active carbon filtering tank 002 by water pump and filters;
Step S2: the water after primary filtration enters coagulative precipitation tank 003, by add sodium hydroxide solution adjust pH to Between 7.5-8, then adds PAC and PAM and stir, generate floccule body precipitating;
Step S3: immersion ultrafiltration apparatus 004 is entered by overflow by the primary water after coagulating sedimentation;
Step S4: ultrafiltration production water is evacuated in butterfly reverse osmosis membrane group 005 by water pump to carry out except salt treatment, and producing water ratio exists Between 70%-80%, the production water of butterfly reverse osmosis membrane group 005 is returned in circulation type washing sink;The concentrated water that ultrafiltration generates passes through water Pumping is disposed into double-effect evaporation crystallization apparatus 006;
Step S5: the concentrated water that butterfly reverse osmosis membrane group 005 generates is evacuated in double-effect evaporation crystallizer 006 by water pump;
Step S6: the steam that evaporative crystallization generates is returned to after being condensed by pipe heat exchanger in circulation type washing sink;
Step S7: the dope that double-effect evaporation crystallizer generates still contains a small amount of moisture, send into drier 007 drying, The steam generated in evaporation process is returned to after being condensed by pipe heat exchanger in circulation type washing sink.
The utility model is excellent in Shanghai dangerous waste incineration disposal the center implementation application verification of production practices, effect It is good.Dangerous waste incineration disposal center fume washing water design treatment scale is 50t/d, and design raw water quality main indicator requires such as Under:
After being handled by process system described in the utility model, effluent quality main indicator is as follows:
Serial number Pollutant It is discharged numerical value (mg/l)
1 CODcr ≤100
2 Ammonia nitrogen ≤10
3 Total salinity ≤1500
4 Chloride ion ≤500
Through system described in the utility model after line is except salt treatment, water outlet is returned in circulating water pool, with flue gas washing High-concentration salt-containing wastewater mixed diluting, guarantee circulating water pool in chloride ion content between 7000-8000mg/L.It is by this After the processing of system, obtaining dry salt slag daily is 350-400kg.
Embodiment two
A kind of online desalination of dangerous waste incineration flue gas washes and reclaiming system, the system comprises: circulation washing water storage Container, filtering tank, coagulative precipitation tank, ultrafiltration apparatus, reverse osmosis membrane group, crystallizing evaporator, drier and heat exchanger;
The circulation washs water storage container, filtering tank, coagulative precipitation tank, ultrafiltration apparatus, reverse osmosis membrane group, evaporative crystallization Device, drier are sequentially connected;
The crystallizing evaporator, drier pass through piping connection to heat exchanger respectively, and crystallizing evaporator, drier are by steam It is delivered to heat exchanger, steam condensate (SC) is delivered to circulation washing by piping connection to circulation washing water storage container by heat exchanger Water storage container.
A kind of online desalination and reuse method of the above-mentioned online desalination of dangerous waste incineration flue gas washes and reclaiming system, Described method includes following steps:
Step S1: the recirculated water in circulation washing container is evacuated to filtering tank filtering by water pump;
Step S2: the water after primary filtration enters coagulative precipitation tank, adjusts pH to 7.5-8 by adding sodium hydroxide solution Between, it then adds PAC and PAM and stirs, generate floccule body precipitating;
Step S3: ultrafiltration apparatus is entered by overflow by the primary water after coagulating sedimentation;
Step S4: ultrafiltration production water is evacuated in reverse osmosis membrane group by water pump to carry out except salt treatment, and producing water ratio is in 70%-80% Between, the production water of reverse osmosis membrane group returns in circulation type washing sink;The concentrated water that ultrafiltration generates is evacuated to evaporative crystallization dress by water pump Set middle disposition;
Step S5: the concentrated water that reverse osmosis membrane group generates is evacuated in crystallizing evaporator by water pump;
Step S6: the steam that evaporative crystallization generates is returned to after being condensed by pipe heat exchanger in circulation type washing sink;
Step S7: the dope that crystallizing evaporator generates still contains a small amount of moisture, send and is dried and evaporated process into drier The steam of middle generation is returned to after being condensed by pipe heat exchanger in circulation type washing sink.
In conclusion the utility model proposes the online desalination of dangerous waste incineration flue gas washes and reclaiming system and side Method, so that the high slat-containing wastewater from incineration flue gas wet recycle scrubbing tower is after series of preprocessing, using butterfly reverse osmosis Permeable membrane is concentrated and separated, and generated desalted water (referred to as producing water) returns in circulating water pool, meanwhile, butterfly reverse osmosis membrane generates Concentrated water by after double-effect evaporation crystallization apparatus, the steam of generation by being also returned in circulating water pool after pipe heat exchanger condensation, It is mixed with the fume washing water of high saliferous, reduces the concentration of salt in recirculated water.Domestic dangerous waste disposition center flue gas at present is solved to follow Pipe-line system salt Crystallization Plugging pipeline is washed in washing-round, the crystallization of scrubbing tower salt increases the operation problem such as flue gas resistance.
Here the description and application of the utility model are illustrative, are not wishing to for the scope of the utility model being limited in It states in embodiment.The deformation and change of embodiments disclosed herein be it is possible, for the ordinary skill people of those this fields The replacement of embodiment and equivalent various parts are well known for member.It should be appreciated by the person skilled in the art that not taking off In the case where spirit or essential characteristics from the utility model, the utility model can in other forms, structure, arrangement, ratio, And it is realized with other components, material and component.It, can be to this in the case where not departing from the scope of the utility model and spirit In disclosed embodiment carry out other deformations and change.

Claims (9)

1. a kind of online desalination of dangerous waste incineration flue gas washes and reclaiming system, which is characterized in that the system comprises: circulation Type washing sink (001), active carbon filtering tank (002), coagulative precipitation tank (003), immersion ultrafiltration apparatus (004), butterfly reverse osmosis Permeable membrane group (005), double-effect evaporation crystallizer (006), drier (007) and pipe heat exchanger (008);
The circulation type washing sink (001), active carbon filtering tank (002), coagulative precipitation tank (003), immersion ultrafiltration apparatus (004), butterfly reverse osmosis membrane group (005), double-effect evaporation crystallizer (006), drier (007) are sequentially connected;
The double-effect evaporation crystallizer (006), drier (007) pass through piping connection to pipe heat exchanger (008), economic benefits and social benefits respectively Steam is delivered to pipe heat exchanger (008) by crystallizing evaporator (006), drier (007), and pipe heat exchanger (008) passes through pipe Road is connected to circulation type washing sink (001), and steam condensate (SC) is delivered to circulation type washing sink (001);
The circulation type washing sink (001) is set to below dangerous waste incineration flue gas wet scrubbing tower, and the water in pond is mainly used To recycle washing dangerous waste incineration flue gas, sour gas and particulate matter in removal flue gas;It is set in circulation type washing sink (001) It is equipped with online pH analyzer and liquidometer, and has pH regulating system and tank level control system;
The pH regulating system main function is that the water adjusted in circulating water pool is 7.5-8, and the tank level control system is mainly made It is automatically replenished recirculated water with when being water level decreasing to the early warning water level low spot in pond, it is high to rise to early warning water level for water level in pond Stop supplement recirculated water when point;
By the first piping connection, the first pipeline is equipped with water for the circulation type washing sink (001) and active carbon filtering tank (002) Pump, the recirculated water recycled in type washing sink are evacuated to active carbon filtering tank (002) filtering by water pump, and preliminary removal partial size is biggish Impurity;
The active carbon filtering tank (002) and coagulative precipitation tank (003) pass through the second piping connection, and the water after primary filtration is sent To coagulative precipitation tank (003), flocculation sedimentation is formed by addition sodium hydroxide solution, PAC and PAM, reduce calcium in water, magnesium from Son, coagulated sludge are discharged after bottom of pond concentration, as the outer disposition of dangerous waste committee;
The coagulative precipitation tank (003) is by third piping connection immersion ultrafiltration apparatus (004), in coagulative precipitation tank (003) Immersion ultrafiltration apparatus (004) is entered by overflow by the primary water after coagulating sedimentation, colloidal substance, granule foreign are in this work Sequence removal, the concentrated water that a small amount of ultrafiltration generates send into double-effect evaporation crystallizer (006) disposition;
The immersion ultrafiltration apparatus (004) is equipped with height by the 4th piping connection butterfly reverse osmosis membrane group (005), the 4th pipeline Water pump, ultrafiltration containing water, ion and small molecular weight material produce water by water pump be evacuated in butterfly reverse osmosis membrane group (005) into The removal of row salts substances, the production water of butterfly reverse osmosis membrane group (005) return in circulation type washing sink (001);
The butterfly reverse osmosis membrane group (005) is equipped with water by the 5th piping connection double-effect evaporation crystallizer (006), the 5th pipeline Pump;The concentrated water of butterfly reverse osmosis membrane group (005) is evacuated in double-effect evaporation crystallizer (006) by water pump, what evaporative crystallization generated Steam is returned to after being condensed by pipe heat exchanger (008) in circulation type washing sink (001);
The double-effect evaporation crystallizer (006) passes through the 6th piping connection drier (007);Double-effect evaporation crystallizer (006) produces Raw dope still contains a small amount of moisture, send dope by the 6th pipeline and is finally dried to obtain salt slag into drier (007), Salt slag is as the outer processing of dangerous waste committee;The steam generated in evaporation process returns to circulation after condensing by pipe heat exchanger (008) and washes It washs in pond (001);
The waste water of the high saliferous generated in incineration flue gas circulation washing process is persistently discharged by wet scrubbing tower bottom, and by changing Enter in circulating water pool after hot device heat exchange.
2. a kind of online desalination of dangerous waste incineration flue gas washes and reclaiming system, which is characterized in that the system comprises: circulation Wash water storage container, filtering tank, coagulative precipitation tank, ultrafiltration apparatus, reverse osmosis membrane group, crystallizing evaporator, drier and heat exchange Device;
The circulation washing water storage container, coagulative precipitation tank, ultrafiltration apparatus, reverse osmosis membrane group, crystallizing evaporator, is done filtering tank Dry device is sequentially connected;
The crystallizing evaporator, drier pass through piping connection to heat exchanger respectively, and crystallizing evaporator, drier convey steam To heat exchanger, heat exchanger is delivered to circulation washing water storage by piping connection to circulation washing water storage container, by steam condensate (SC) Container.
3. the online desalination of dangerous waste incineration flue gas washes according to claim 2 and reclaiming system, it is characterised in that:
The circulation washing water storage container is set to below dangerous waste incineration flue gas wet scrubbing tower, and the water in pond is mainly used to Circulation washing dangerous waste incineration flue gas, removes the sour gas and particulate matter in flue gas;It is arranged in circulation washing water storage container There are online pH analyzer and liquidometer, and has pH regulating system and tank level control system;
The pH regulating system main function is that the water adjusted in circulating water pool is 7.5-8, and the tank level control system is mainly made It is automatically replenished recirculated water with when being water level decreasing to the early warning water level low spot in pond, it is high to rise to early warning water level for water level in pond Stop supplement recirculated water when point.
4. the online desalination of dangerous waste incineration flue gas washes according to claim 2 and reclaiming system, it is characterised in that:
By the first piping connection, the first pipeline is equipped with water pump for the circulation washing water storage container and filtering tank, recycles washing water Recirculated water in pond is evacuated to filtering tank filtering by water pump, preliminary to remove the biggish impurity of partial size;
The filtering tank and coagulative precipitation tank pass through the second piping connection, and the water after primary filtration is sent to coagulative precipitation tank, lead to It crosses addition sodium hydroxide solution, PAC and PAM and forms flocculation sedimentation, reduce the calcium and magnesium ion in water, coagulated sludge is in pond It is discharged after the concentration of bottom, as the outer disposition of dangerous waste committee.
5. the online desalination of dangerous waste incineration flue gas washes according to claim 2 and reclaiming system, it is characterised in that:
The coagulative precipitation tank passes through third piping connection ultrafiltration apparatus, passes through the primary water after coagulating sedimentation in coagulative precipitation tank Enter ultrafiltration apparatus by overflow, colloidal substance, granule foreign are removed in this process, and the concentrated water that a small amount of ultrafiltration generates is sent to evaporation It is disposed in crystallizer.
6. the online desalination of dangerous waste incineration flue gas washes according to claim 2 and reclaiming system, it is characterised in that:
The ultrafiltration apparatus is equipped with water pump, contains water, ion and small point by the 4th piping connection reverse osmosis membrane group, the 4th pipeline The ultrafiltration of sub- quantity of material produces water and is evacuated to progress salts substances removal in reverse osmosis membrane group by water pump, and producing water ratio is in 70%-80% Between, the production water of reverse osmosis membrane group returns in circulation washing water storage container.
7. the online desalination of dangerous waste incineration flue gas washes according to claim 2 and reclaiming system, it is characterised in that:
The reverse osmosis membrane group is equipped with water pump by the 5th piping connection crystallizing evaporator, the 5th pipeline;Reverse osmosis membrane group it is dense Water is evacuated in crystallizing evaporator by water pump, and the steam that evaporative crystallization generates returns to circulation washing water storage after condensing by heat exchanger In container.
8. the online desalination of dangerous waste incineration flue gas washes according to claim 2 and reclaiming system, it is characterised in that:
The crystallizing evaporator passes through the 6th piping connection drier;The dope that crystallizing evaporator generates still contains a small amount of water Point, it send into drier and is finally dried to obtain salt slag;The steam generated in evaporation process returns to circulation after condensing by heat exchanger It washs in water storage container.
9. the online desalination of dangerous waste incineration flue gas washes according to claim 2 and reclaiming system, it is characterised in that:
The waste water of the high saliferous generated in incineration flue gas circulation washing process is persistently discharged by wet scrubbing tower bottom, and by changing Enter in circulating water pool after hot device heat exchange.
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110510772A (en) * 2019-08-27 2019-11-29 中国城市建设研究院有限公司 A kind of processing unit and method of flue gas of refuse burning wet processing waste water

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110510772A (en) * 2019-08-27 2019-11-29 中国城市建设研究院有限公司 A kind of processing unit and method of flue gas of refuse burning wet processing waste water

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